The Optima range from Grant offers modular convenience for all stirred/circulator/chiller bath requirements. Any four of the heated circulators can be combined with any of five tanks. There are four heated circulator options in the Grant Optima series; two basic (T100/TC120) and two advanced (TX150/TX200). All offer digital microprocessor control and excellent temperature stability. A cost-effective range of multi-purpose systems combining Grants legendary quality and reliability.